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Experimental study on the effects of pre-heating a battery in a low-temperature environment

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7 Author(s)
Hyun-Sik Song ; Dept. of Control & Instrum. Eng., Korea Univ., Sejong, South Korea ; Jin-Beom Jeong ; Baek-Haeng Lee ; Dong-Hyun Shin
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The performance of a plug-in hybrid electric vehicle (PHEV) or an electric vehicle (EV) is closely related to the performance of its high-voltage battery pack. This is why, among the various means of maintaining a battery's peak performance, the importance of thermal management is emphasized. Since the early stages of the development of Li-ion batteries, much emphasis has been placed on battery cooling in order to secure stability, while less attention has been given to battery heating. However, in a low-temperature environment, using a battery without heating it severely undermines the battery's performance and life expectancy. A PHEV or an EV operates with energy that is stored by charging the battery, which can then be heated by an external source in a low-temperature environment prior to driving. In this study, a battery HILS and an environment simulation system are used to verify that pre-heating a battery in a low-temperature environment, using an external source, such as a charging stand, improves the battery's performance as compared to circumstances in which this is neglected.

Published in:

Vehicle Power and Propulsion Conference (VPPC), 2012 IEEE

Date of Conference:

9-12 Oct. 2012